Paris, 1937 - Photograph Views of the Spanish Pavilion at the Paris International Exhibition of Art and Technology in Modern Life
Madrid, 10 September 1981 - Internal museum documents Certificate for the reception of Guernica, and its stretcher and related works
2 March 1974 - Institutional correspondence A letter from Karl Denim, S. S. Kush and Joshua Jericho in defence of Tony Shafrazi